I've been there a couple times ( always pretty tasty ) and remember that they serve a wide variety of interesting rolls. There is a link to their menu in the very top left side of the page. Might be what you are looking for. The cab ride would be comparable to taking a cab to Rosemary's, as they are very close to each other.

kaizen fusion roll and sushi (across the street from the hard rock) has many "special" sushi rolls. i have tried kobe sushi which is 10 mins west of the strip and was very very disappointed. kaizen however is good if you're not looking for a more traditional sushi fare - like at okada (which is amazing, by the way).

if you do make it to kaizen, please please order the spicy tuna with crispy rice. it is on the hot appetizer menu. my favorite thing on the menu.